Each part of that keyword represents a critical hardware component. If you try to flash firmware that doesn't match these exactly, the touchscreen or Wi-Fi will likely stop working.
This is the System on a Chip (SoC) made by WonderMedia (a subsidiary of VIA). It’s a Cortex-A9 processor that was popular in budget tablets. wm8850 mid7 puzhi w01 8223 ft5206 w70 wmc15797z upd
Use a card 8GB or smaller, formatted to FAT32 . Each part of that keyword represents a critical
This specific string of characters——is a technical fingerprint for a very specific generation of "white label" Android tablets produced around 2012–2014. wm8850 mid7 puzhi w01 8223 ft5206 w70 wmc15797z upd